flutter_form_wizard/lib/utils/translation_service.dart

import 'package:flutter/material.dart';
import 'package:flutter_form/utils/providers.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

abstract class TranslationService {
  TranslationService._();

  String translate(
    BuildContext context,
    String key, {
    List<String>? params,
  });

  String number(double value);
}

typedef Translator = String Function(
  String, {
  List<String>? params,
});

class ShellTranslationService implements TranslationService {
  @override
  String number(double value) {
    return value.toStringAsFixed(2);
  }

  @override
  String translate(BuildContext context, String key, {List<String>? params}) {
    return key;
  }
}

Translator getTranslator(BuildContext context, WidgetRef ref) {
  try {
    var translator = ref.read(translationServiceProvider).translate;
    return (
      String key, {
      List<String>? params,
    }) {
      return translator(context, key, params: params);
    };
  } catch (e) {
    return (
      String key, {
      List<String>? params,
    }) {
      return key;
    };
  }
}